As expected, Amazon experienced a spike in preordered games after Gamescom, but what was not expected was that the Wii U had the biggest increase in preorders.

Specifically, Wii U game preorders rose 8.67%, compared to the PS4's 5.16% increase and the Xbox One's meager 2.81% increase. The game with the single biggest increase in preorders was Project CARS by 42.3%, followed by Rise of the Tomb Raider by 30.25% (guess the Xbox One exclusivity didn't deter too many people).

Why would the Xbox exclusivity deter Xbox owners from pre-ordering the game? That conclusion made on that data is probably irrelevant unless we were expecting xbox gamers to boycott the game to help out other system owners :P